When a two-leg chain sling is choked around a steel beam at 60 degrees, how is the load slung to prevent the reeve from slipping?

When a two-leg chain sling is choked around a steel beam at 60 degrees, how is the load slung to prevent the reeve from slipping?

• A. Single wrap
• B. Double wrap
• C. Belt wrap
• D. Knotted wrap

Answer: (B)

When using a two-leg chain sling and choking it around a steel beam at an angle of 60 degrees, employing a double wrap is essential for ensuring the load is secured properly and minimizing the risk of slippage. A double wrap effectively increases grip and friction along the beam, which helps to hold the sling in position under load. The mechanics of stress distribution come into play here; by wrapping the sling around the beam more than once, the surface area in contact with the beam increases. This added friction reduces the likelihood of the reeve (the point at which the sling contacts the load) slipping, especially at steeper angles. At 60 degrees, the forces acting on the sling are amplified, making the stability provided by a double wrap critical for safe lifting operations. While a single wrap offers minimal grip and security, a belt wrap could imply an incorrect configuration for this type of load, and a knotted wrap may not provide the necessary strength or stability in the context of a hitching mechanism in a lifting scenario. Therefore, utilizing a double wrap is the correct and safest method in this situation.

When using a two-leg chain sling and choking it around a steel beam at an angle of 60 degrees, employing a double wrap is essential for ensuring the load is secured properly and minimizing the risk of slippage. A double wrap effectively increases grip and friction along the beam, which helps to hold the sling in position under load.

The mechanics of stress distribution come into play here; by wrapping the sling around the beam more than once, the surface area in contact with the beam increases. This added friction reduces the likelihood of the reeve (the point at which the sling contacts the load) slipping, especially at steeper angles. At 60 degrees, the forces acting on the sling are amplified, making the stability provided by a double wrap critical for safe lifting operations.

While a single wrap offers minimal grip and security, a belt wrap could imply an incorrect configuration for this type of load, and a knotted wrap may not provide the necessary strength or stability in the context of a hitching mechanism in a lifting scenario. Therefore, utilizing a double wrap is the correct and safest method in this situation.